Debian dla-4161 : simplesamlphp - security update

high Nessus Plugin ID 235669

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dla-4161 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4161-1 [email protected] https://www.debian.org/lts/security/ Tobias Frost May 09, 2025 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : simplesamlphp Version : 1.19.0-1+deb11u2 CVE ID : CVE-2025-27773 Debian Bug : 1100595

A vulnerability has been discovered in SimpleSAMLphp, a framework for authentication, primarily via the SAML protocol.

CVE-2025-27773

The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding.
An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message.
Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue.

For Debian 11 bullseye, this problem has been fixed in version 1.19.0-1+deb11u2.

We recommend that you upgrade your simplesamlphp packages.

For the detailed security status of simplesamlphp please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/simplesamlphp

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the simplesamlphp packages.

Plugin Details

Severity: High

ID: 235669

File Name: debian_DLA-4161.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 5/9/2025

Updated: 5/9/2025

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2025-27773

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:simplesamlphp

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/9/2025

Vulnerability Publication Date: 3/11/2025

Reference Information

CVE: CVE-2025-27773

Detections

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